This Voice Digital Dialling feature makes call handling much safer and more convenient.  And if the number is already registered in your phone's address book, it's enough to say the name of the person you want to call.  The versatile Sony Ericsson HCB 700 is made up of two units, which further increases your safety and convenience.  Attach the control unit close to your hand. The easy to use buttons at the control unit can be used intuitively-you don't have to look at it, but can focus on traffic while scrolling through the menu. Mount the flexible Info display at eye level-for example on the car's dashboard or close to the rearview mirror. When the phone rings you take a quick look at the Info display to see the Caller ID-and decide whether you want to take or reject the call.